*SUPPORT*
IN: fep tufa wif lug OUT: BLUE GREEN YELLOW
IN: tufa gazzer OUT: YELLOW YELLOW
IN: tufa OUT: YELLOW
IN: tufa blicket OUT: YELLOW YELLOW
IN: lug tufa gazzer OUT: GREEN YELLOW YELLOW
IN: lug gazzer OUT: GREEN GREEN
IN: fep wif fep OUT: BLUE BLUE
IN: dax wif lug OUT: GREEN PURPLE
IN: lug lug wif fep OUT: GREEN BLUE GREEN
IN: fep OUT: BLUE
IN: dax wif dax OUT: PURPLE PURPLE
IN: dax wif tufa OUT: YELLOW PURPLE
IN: fep gazzer OUT: BLUE BLUE
IN: tufa wif tufa OUT: YELLOW YELLOW

*QUERY*
IN: tufa dax gazzer OUT: YELLOW PURPLE PURPLE
IN: tufa wif lug OUT: GREEN YELLOW
IN: dax tufa fep OUT: PURPLE YELLOW BLUE
IN: tufa fep gazzer OUT: YELLOW BLUE BLUE
IN: fep fep OUT: BLUE BLUE
IN: lug OUT: GREEN
IN: lug blicket OUT: GREEN GREEN
IN: fep wif lug OUT: GREEN BLUE
IN: dax gazzer OUT: PURPLE PURPLE
IN: fep blicket OUT: BLUE BLUE

*GRAMMAR*
tufa -> YELLOW 
 lug -> GREEN 
 fep -> BLUE 
 dax -> PURPLE 
 u1 wif u2 -> [u2] [u1] 
 u1 blicket -> [u1] [u1] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 